ULTIMATE TRIGGER STOP - GLOCK 9MM. Ultimate Trigger Stop (UTS) gives you a competitive edge by completely eliminating Glock trigger over travel. Trigger over travel is defined by: "The amount of rearward movement after the firing pin has been released". The results of eliminating trigger over travel (wasted movement) are - smoother trigger reset, faster doubles, faster splits and overall premium trigger performance. The UTS includes a new style trigger housing with ejector, polished trigger stops and Allen Wrench for adjustments. This drop in part replaces your current trigger housing. The easy-to-follow instructions allow you to completely remove your trigger "over travel" in seconds. No gunsmithing is required. The UTS allows you to "turn it on or turn it off" at will. LWD-322 fits all Glock 9mm pistols G17, G19, G26, G34. Gen 1-3. Shipping Weight: 0.012 lbs.